This is what we did in our class for science. We learned about the body system. The respiratory system is about how you breathe in and out. You can breathe from your mouth or nose. When you breathe out you remove carbon dioxide and gases. The nervous system is made up neurons. It helps you respond the world around you. The circulatory system is about the heart in your body. Vessels, blood, and the heart are all part of the circulatory system.
by Madelyn
by Madelyn